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Help identifying component.

Discussion in 'General Electronics Discussion' started by woodworkerjb, Nov 22, 2015.

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  1. woodworkerjb

    woodworkerjb

    5
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    Jan 28, 2012
    component ident.png Hello All,

    I have two circuit boards and one needs repair. It is clear that 2 components need to be replaced before going any further. The problem for me is I really don't know what they are. They appear to be glass "bulbs" with 2 wire leads, and 2 larger cylindrical leads running parallel to each other in the bulb. I would post a picture but was unable to figure out how to do so. Any ideas on what these are is appreciated.

    JB
     
    Last edited: Nov 22, 2015
  2. swagguy8

    swagguy8

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    Dec 10, 2014
    picture?
     
  3. woodworkerjb

    woodworkerjb

    5
    1
    Jan 28, 2012
    I have a picture but have not figured out how to insert it. What is the secret to posting a picture?
     
  4. woodworkerjb

    woodworkerjb

    5
    1
    Jan 28, 2012
    Finally got a file to upload.
     
  5. davenn

    davenn Moderator

    13,802
    1,941
    Sep 5, 2009
    its a neon globe
    they take around 90 VAC to strike

    often used as a high voltage spark gap protection device
     
  6. woodworkerjb

    woodworkerjb

    5
    1
    Jan 28, 2012
    Thank you so much I never would have guessed that. It makes perfect sense because part of this board has a gasliter component.
     
    davenn likes this.
  7. Minder

    Minder

    3,066
    657
    Apr 24, 2015
    The puzzle now is what is the function, neons can be a simple indicator, or can be used as a trigger device or?
    M.
     
  8. hevans1944

    hevans1944 Hop - AC8NS

    4,596
    2,149
    Jun 21, 2012
    Neon lamps need something (usually a resistor) to limit the current after they begin to conduct:
    [​IMG]
     
  9. shrtrnd

    shrtrnd

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    Jan 15, 2010
    My question is what makes you think the neon bulb needs to be replaced?
    It's very difficult to fry one.
    I'm thinking maybe you should be looking elsewhere for whatever the problem might be.
     
    davenn likes this.
  10. davenn

    davenn Moderator

    13,802
    1,941
    Sep 5, 2009
    exactly, the glass envelope isn't broken and there doesn't appear to be any burn marks inside the globes
    the problem lies elsewhere

    Dave
     
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